Vaporizer for gasolene-engines.



No. 688,367. Patented Doc. [0, I901.

" G. E. TREGURTHA.

VAPORIZER FOB GASDLENE ENGINES.

(Application filed Jan. 9, 1901.

(No Model.)

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UNITED "STATES.

PATENT @FFICE".

GEORGE E. TREGURTHA, OF MALDEiv', MASSACHUSETTS.

VAPORIZER FOR GASOLENE-ENGINES SPECIFICATION forming part of Letters Patent No. 688,367, dated December 10, 1901..

V Application filed January 9, 1901. Serial No. 42,650. (No model.)

rangement of the airand gasolene valves and the diaphragm separating the shell of the vaporizer into two chambers, constructed and operating to cause the oil as it passes the oilvalve to form a film between the interior walls of the valve proper and the exterior Walls of the valve-seat and to flow downward over the flaring stud from which the valveseat extends vertically upward in a film of increasing area and decreasing thickness, so

- that the air flowing through the vaporizer takes up the oil to the best advantage.

In Fig. 1 of the drawings, A indicates the shell or body of the vaporizer with the usual .air-inlet a and outlet a for the mixed air and gasolene. The stem B is enlarged at b to form the air-valve and has a conical recess 19, which may be well described as the movable seat of the gasolene-valve-that is, as valves necessarily consist of two parts the enlarged end b of stem B and the opening through diaphragm a of the shell A constitute the airvalve, while the inner surface of the conical recess 1) in the inner end of stem B and the hollow conical stud D constitute the gasolene-Valve, although it is also proper to speak of the stud D as the gasolene-valve and the recessed end of stem B as the movable seat of the gasolene-valve. In Fig. 1 stem B is prolonged by stem B to extend through'boss F, which is the guide for stems B B and also a chamber for spring f. Cover A carries boss F, stems B B, and spring f. A pipe leading from the gasolene -tank connects with the gasolene-inlet a which is the lower end of the tube whose upper end forms the conical stud D and which is formed with the collar 01 and held in place in shell A by the nut 01.

The modified form of my invention shown in Fig. 2 is the same in substance as the form shown in Fig. 1; but shell A difiers mainly in having the gasolene-inlet a as the outer end of a pipe integral with the shell and also in having the air-valve Z9 seated on the diaphragm a of the shell. The stem B with the conical recess at its inner end, is sepa rate from the air-valve and has a collar 19 which forms one abutment for spring f and also acts with the sleeve 6 of the air-valve. The gasolene-valve D is also secured to shell A by a screw-thread at one end, as plainly shown in Fig. 2.

The operation is as follows: When a par tial vacuum is produced in the cylinder of the engine, air flows through inlet 0., opening the air-valve and also the gasolenewalve, and commingling with the gasolene-vapor flows through outlet a into the cylinder of the engine; but as soon as the air-flow ceases the valves are reseated, as will be plain;

The main advantage of my new valves is that the gasolene escapes as a thin hollow film instead of in drops, as heretofore,thereby presenting an enormouslygreater area of surface to the air-current and being much more perfectly vaporized.

I prefer to make the gasolene-valve proper in one piece with the air-valve proper, as shown in Fig. 1; but for some purposes it is desirable to make these two valves in separate pieces, as shown in Fig. 2, in order that the air valve may be moved slightly away from its seat before the gasolene-valve is unseated, and this is especially desirable in case of large gasolene-engines; but the form shown in Fig. 1 is better in the smaller engines.

What I claim as my invention is In a vaporizer the combination of a casing; a diaphragm separating that casing into two chambers; an air-aperture through the highest part of the diaphragm; an air-valve controlling that aperture; a valve-stem arranged vertically with relation to the air-aperture and air-valve, and formed with a hollow conical recess at its lower end, the walls of that recess forming the movable portion of the oilvalve; and the seat of the oil-valve made up of a vertical tubular tip to act with the hollow conical recess in the valve-stem, extending vertically upward from a stud with a flaring upper surface; all substantially as and for the purpose specified.

GEORGE E. TREGURTHA. Witnesses J J. E. MAYNADIER, JAs. TREGU'ETHA. 

